Annals of Biomedical Engineering

, Volume 34, Issue 8, pp 1247–1258 | Cite as

Evolution of Oxygen and Glucose Concentration Profiles in a Tissue-Mimetic Culture System of Embryonic Stem Cells

  • David M. Cochran
  • Dai Fukumura
  • Marek Ancukiewicz
  • Peter Carmeliet
  • Rakesh K. Jain
Article

Abstract

A tissue-mimetic culture system (TMCS) in which cells are sandwiched between two glass slides provides an ideal microenvironment for studying the effects of oxygen and nutrient gradients on cells in culture. A mathematical model was utilized to predict the time course of the development of oxygen and glucose concentration gradients within the TMCS. Oxygen and glucose consumption rates of mouse embryonic stem cells were measured as parameters for the model. The model predicts oxygen and glucose concentration profiles directly using a single experimentally controlled variable, the seeding density of cells within the system. The model predicts that the time required for the gradients to reach steady state is inversely related to the cell density, and the penetration depth of the gradients into the TMCS is inversely related to the square root of the cell density. Experimental oxygen concentration measurements were performed at a cell density of 9.1×106 cells cm−3, and the gradient was found to develop to a steady-state profile within 20 min and penetrate approximately 2 mm into the TMCS, consistent with the theoretical predictions. This model and the TMCS provide useful tools for investigating the effect of the metabolic microenvironment on cells in culture.

Keywords

Mathematical modeling Cancer Hypoxia Stem cell biology Tissue-mimetic culture 

ABBREVIATIONS

TMCS

tissue-mimetic culture system

ES cell

embryonic stem cell

HIF

hypoxia-inducible factor

OBS

Oxygen biosensor

OCR

oxygen consumption rate

Notes

ACKNOWLEDGMENTS

The authors thank the NIH for grant support (NIH grant P01 CA80124), and DMC thanks the Whitaker Foundation for fellowship support for this work. The authors would like to acknowledge William M. Deen (Chemical Engineering, MIT) for his scientific advice on the mathematical model used, Clark Colton and Daryl Powers (Chemical Engineering, MIT) for their assistance in measuring the stirred-chamber oxygen consumption rates, and Tim Padera and Ryan Lanning (Massachusetts General Hospital) for their editorial and scientific advice in the preparation of the manuscript.

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Copyright information

© Biomedical Engineering Society 2006

Authors and Affiliations

  • David M. Cochran
    • 1
  • Dai Fukumura
    • 1
  • Marek Ancukiewicz
    • 1
  • Peter Carmeliet
    • 2
  • Rakesh K. Jain
    • 1
  1. 1.Edwin L. Steele Laboratory, Department of Radiation OncologyMassachusetts General HospitalBostonUSA
  2. 2.Center for Transgene Technology and Gene Therapy, Flanders Interuniversity Institute for Biotechnology (VIB)University of LeuvenLeuvenBelgium

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